Deg tsis xws luag (xws li khawb, arc khawb, vuam caws pliav, thiab lwm yam) yog inevitable nyob rau hauv cov txheej txheem ntawm manufacturing, tsheb thauj mus los thiab kev tsim kho ntawm stainless hlau cia tank. Nws tsuas yog yuav tsum tau polished thiab trimmed, tab sis lub thickness ntawm trimmed steel phaj yuav tsum ntau tshaj los yog sib npaug zos rau lub nominal thickness ntawm steel phaj rho tawm kom tsis txhob muaj qhov tsis zoo ntawm qhov tseem ceeb. Thaum qhov sib tsoo qhov tob yog ntau dua 1 hli, kev kho vuam yuav tsum tau nqa tawm.
Ua ntej kho qhov tsis xws luag sab hauv ntawm lub tank stainless hlau cia, qhov chaw thiab qhov tob ntawm qhov tsis xws luag yuav tsum raug txiav txim siab, thiab kev tu kom huv ntawm lub dab dej yuav tsum raug txiav txim siab. . Lub welded seam tom qab kho yuav tsum tau soj ntsuam raws li tus txheej txheem teev thiab yuav tsum tau raws li tus qauv tsim nyog. Qhov ntev ntawm cov hlaws vuam yuav tsum tsis pub tsawg tshaj 50 hli thaum lub sij hawm rework vuam. Tus naj npawb ntawm kev kho nyob rau tib qhov chaw yuav tsum tsis txhob ntau tshaj 2 zaug, txwv tsis pub tus kws tshaj lij ntawm kev tsim kho yuav tsum pom zoo.
For low-alloy steel with σs Greater than or equal to 390MPa, penetrant inspection should be carried out after defect treatment to confirm that the defect can be repaired before welding. Temper bead should be used for welding, and after welding, it should be ground and repaired to make the surface of the stainless steel tank smooth and penetrate. Flaw detection or magnetic particle inspection; when the depth of welding defect is greater than 3mm, radiographic inspection should be carried out on the repaired part.
